Nassarius mekranicus (FOSSIL) (E.W. Vredenburg, 1925 †)
Bullia melanoides (G.P. Deshayes, 1832)
Bullia melanoides strenaria (G.P. Deshayes, 1832)
Nassarius mendicus (A.A. Gould, 1850)
Nassarius merenda (FOSSIL) A.A. Olsson, 1922 †
Nassaria mergregia (L.A. Reeve, 1844)
Nassarius merlei (FOSSIL) F. Van Dingenen, L. Ceulemans& al., 2015 †
Nassarius metuliformis (FOSSIL) F.S. MacNeil, 1960 †
Antillophos metuloides (W.H. Dall, 1896)
Antillophos mexicanus (FOSSIL) (Bose, 1906 †)
Antillophos miculus K. Fraussen & G.T. Poppe,2005
Tritia miga (J.G. Bruguière, 1789)
Cyclope migliorinii (FOSSIL) Bevilaqua, 1928 †
Strombinophos mimicus (FOSSIL) W.P. Woodring, 1964 †
Metaphos minusculus (W.H. Dall, 1917)
Antillophos minutus (M.M. Schepman, 1911)
Nassarius miqueli (FOSSIL) M.A. Peyrot, 1903 †
Nassarius mirabilis L. Bozzetti, 2007
Dorsanum miran (J.G. Bruguière, 1789)
Bullia mirepicta L. Bozzetti, 2007
Nassaria miriamae (R.K. Dell, 1967)
Nassarius miser (W.H. Dall, 1908)
Tritiaria mississippiensis (FOSSIL) (T.A. Conrad, 1848 †)
Nassarius mobilis (C. Hedley & W.L. May,1908)
Nassarius moestus (R.B. Hinds, 1844)
Antillophos monachus (FOSSIL) W.P. Woodring, 1964 †
Nassarius monensis (FOSSIL) (Forbes) †
Buccinanops monilifer (L.C. Kiener, 1834)
Antillophos monsecourorum K. Fraussen & G.T. Poppe,2005
Nassarius moolenbeeki H.H. Kool, 1995
Antillophos moorei (FOSSIL) (R.J.L. Guppy, 1866 †)
Antillophos moorei costaricensis (FOSSIL) (A.A. Olsson, 1922 †)
Nassaria moosai K. Fraussen, 2006
Caesia moranianus (FOSSIL) Martin, 1914 †
Bullia mozambicensis E.A. Smith, 1878